Licensing and black for BIMTester and IfcBlender. See #1082.

src/ifcbimtester/webapp/main.css

@@ -1,3 +1,23 @@
+/*
+ * BIMTester - OpenBIM Auditing Tool
+ * Copyright (C) 2021 Dion Moult <dion@thinkmoult.com>
+ *
+ * This file is part of BIMTester.
+ *
+ * BIMTester is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * BIMTester is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with BIMTester.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 @import url('https://fonts.googleapis.com/css2?family=Lato:wght@300;400&display=swap');
 
 * {